Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4350306 | Chopper for dishwasher soil separator | Geoffrey L. Dingler, Raymond W. Spiegel | 1982-09-21 |
| 4319598 | Soil separator drain valve | Geoffrey L. Dingler, Raymond W. Spiegel | 1982-03-16 |
| 4319599 | Vertical soil separator for dishwasher | Geoffrey L. Dingler, Raymond W. Spiegel | 1982-03-16 |